CN210715866U - Sealing structure of speed reducer - Google Patents
Sealing structure of speed reducer Download PDFInfo
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- CN210715866U CN210715866U CN201921814467.4U CN201921814467U CN210715866U CN 210715866 U CN210715866 U CN 210715866U CN 201921814467 U CN201921814467 U CN 201921814467U CN 210715866 U CN210715866 U CN 210715866U
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- oil seal
- ball bearing
- deep groove
- groove ball
- seal
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Abstract
The utility model relates to the technical field of speed reducers, in particular to a sealing structure of a speed reducer, which comprises a box body, a motor, an output shaft and an input shaft, wherein a first deep groove ball bearing and a second deep groove ball bearing are arranged in the box body; first deep groove ball bearing and second deep groove ball bearing have first oil seal spare and second oil seal spare, first oil seal spare and second oil seal spare set up respectively in the both ends of first deep groove ball bearing and second deep groove ball bearing, be equipped with the retaining ring for first hole between first oil seal spare and the first deep groove ball bearing, second oil seal spare and second deep groove ball bearing between be equipped with the retaining ring for second hole, the holistic leakproofness of speed reducer can be improved to first oil seal spare and the second oil seal spare that this design was add, the life of extension speed reducer.
Description
Technical Field
The utility model relates to a speed reducer field, concretely relates to seal structure of speed reducer.
Background
The speed reducer is generally used for low-speed and large-torque transmission equipment, and the purpose of reducing speed is achieved by meshing a motor, an internal combustion engine or other high-speed running power with a large gear on an output shaft through a gear with a small number of teeth on an input shaft of the speed reducer.
Present speed reducer operating condition itself has slight vibrations down, leads to producing the gap between bearing and the speed reducer, and the leakproofness is poor, accumulates the piece easily, and the life significantly reduces of speed reducer to just can realize the emergence function through multiple gear combination, the structure is very complicated, to these problems, the utility model provides a seal structure of speed reducer.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a seal structure of speed reducer.
The utility model adopts the technical proposal that: a sealing structure of a speed reducer comprises a box body, a motor, an output shaft and an input shaft, wherein a box cover is installed at the top of the box body, a sealing gasket is arranged between the box body and the box cover, a first deep groove ball bearing and a second deep groove ball bearing are arranged in the box body, the second deep groove ball bearing is sleeved on the output shaft, the first deep groove ball bearing is installed on the box body and is positioned on the end face of the output shaft, and one end of the output shaft extends out of the box body; the existing speed reducer has slight vibration under the working state, so that a gap is generated between a bearing and the speed reducer, the sealing performance is poor, scraps are accumulated easily, the service life of the speed reducer is greatly reduced, and aiming at the problem, the first deep groove ball bearing and the second deep groove ball bearing are provided with a first oil seal part and a second oil seal part, the first oil seal part and the second oil seal part are respectively arranged at two ends of the first deep groove ball bearing and the second deep groove ball bearing, a first hole check ring is arranged between the first oil seal part and the first deep groove ball bearing, a second hole check ring is arranged between the second oil seal part and the second deep groove ball bearing, the first oil seal part and the second oil seal part which are additionally arranged in the design can improve the overall sealing performance of the speed reducer, and the service life of the speed reducer is prolonged.
Preferably, the first oil seal part comprises an end face seal ring and an end face seal cover, the end face seal ring and the end face seal cover are sequentially arranged at one end of the deep groove ball bearing, the end face seal cover is arranged on the box body, the end face seal cover well protects an oil seal of the end face seal ring, the oil seal is prevented from being directly exposed outside, the sealing effect is improved, and the oil seal box is high in applicability and good in practicability; the second oil seal piece is positioned in the box body and comprises an oil seal piece body, the oil seal piece body comprises a first seal lip, a second seal lip and an elastic component, an annular groove is formed in the side face of the oil seal piece body, the annular groove can provide an elastic angle for the first seal lip and can improve the sealing performance, the first seal lip is arranged on a sealing surface of the oil seal piece body through the annular groove, and the second seal lip is arranged at the bottom of the first seal lip; the elastic component is arranged on the peripheral surface of the second sealing lip and provides a binding force for the first sealing lip and the second sealing lip.
Preferably, the peripheral surface of the second sealing lip is provided with an accommodating groove, and the elastic component is arranged in the accommodating groove; the oil seal body inside be provided with the strengthening rib, the strengthening rib can mainly increase the rigidity for second oil seal main part can not warp easily.
Preferably, the box is internally provided with a transmission mechanism and a worm, the input shaft drives the worm to rotate through the transmission mechanism, the transmission mechanism comprises a first gear, a second gear and a worm wheel, a first flat key is arranged on the output shaft, the worm wheel is coaxially connected with the output shaft through the first flat key, the first gear is coaxially connected with the input shaft, a second flat key is arranged on the worm, the second gear is coaxially connected with the worm through the second flat key, the first gear is meshed with the second gear, the worm wheel is meshed with the worm, and the speed reducer is matched with the worm through the transmission mechanism so that the speed reducer is more stable in the working state.
Preferably, a distance ring is arranged on one side of the output end of the output shaft of the worm gear.
Preferably, a first tapered roller bearing and a second tapered roller bearing are mounted at two ends of the worm, and the first tapered roller bearing is located between the second tapered roller bearing and the second gear.
Preferably, an end face oil seal is arranged between the second tapered roller bearing and the box body.
To sum up, the utility model discloses beneficial effect does:
1. the first oil seal piece, the second oil seal piece and the end face oil seal which are additionally arranged in the design can improve the overall sealing performance of the speed reducer and prolong the service life of the speed reducer.
2. The box body is internally provided with the transmission mechanism and the worm, the transmission mechanism is simple in structure, and the speed reducer is more stable in the working state mainly through the matching of the transmission mechanism and the worm.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is apparent that other drawings are obtained from the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the transmission mechanism and the worm of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 1.
The labels in the figure are: the oil seal structure comprises a box body 1, a sealing gasket 2, an output shaft 3, an input shaft 4, a box cover 5, a first deep groove ball bearing 6, a second deep groove ball bearing 7, a first oil seal piece 8, a second oil seal piece 9, a first hole retainer ring 10, a second hole retainer ring 11, an end face seal ring 12, an end face seal cover 13, an oil seal piece body 14, a first seal lip 15, a second seal lip 16, an elastic component 17, an annular groove 18, a containing groove 19, a reinforcing rib 20, a worm 21, a first gear 22, a second gear 23, a worm wheel 24, a first flat key 25, a second flat key 26, a distance ring 27, a first conical roller bearing 28, a second conical roller bearing 29 and an end face oil seal 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.
As shown in fig. 1 to 3, fig. 3 is a partial enlarged view of a position a in fig. 1, a position a is a schematic structural view of a second oil seal 9, and a sealing structure of a speed reducer includes a box body 1, a motor, an output shaft 3 and an input shaft 4, a box cover 5 is installed at the top of the box body 1, a sealing gasket 2 is arranged between the box body 1 and the box cover 5, a first deep groove ball bearing 6 and a second deep groove ball bearing 7 are arranged in the box body 1, the second deep groove ball bearing 7 is sleeved on the output shaft 3, the first deep groove ball bearing 6 is installed on the box body 1 and is located on an end surface of the output shaft 3, and one end of the output shaft 3 extends out of the box body 1; the existing speed reducer has slight vibration in the working state, so that a gap is generated between a bearing and the speed reducer, the sealing property is poor, scraps are easy to accumulate, the service life of the speed reducer is greatly reduced, and aiming at the problem, the first deep groove ball bearing 6 and the second deep groove ball bearing 7 are provided with a first oil seal 8 and a second oil seal 9, the first oil seal 8 and the second oil seal 9 are respectively arranged at two ends of the first deep groove ball bearing 6 and the second deep groove ball bearing 7, a first hole check ring 10 is arranged between the first oil seal 8 and the first deep groove ball bearing 6, and a second hole check ring 11 is arranged between the second oil seal part 9 and the second deep groove ball bearing 7, and the first hole check ring 10 and the second hole check ring 11 are respectively matched and fixed with the first oil seal part 8 and the second oil seal part 9, so that the stability of the first oil seal part 8 and the second oil seal part 9 is improved.
First oil blanket spare 8 is including end face seal 12 and end face seal lid 13, end face seal 12 and end face seal lid 13 set gradually in deep groove ball bearing one end, end face seal 12 is the oil blanket, it mainly plays a sealed effect to output shaft 3, end face seal lid 13 install on box 1, end face seal lid 13 fine protection the oil blanket of end face seal 12, prevent that the oil blanket from directly exposing outside, improved sealed effect, the suitability is strong and the practicality is good.
The second oil seal 9 is located in the box 1, the second oil seal 9 includes an oil seal body 14, the oil seal body 14 includes a first seal lip 15, a second seal lip 16 and an elastic component, a ring groove 18 is opened on the side surface of the oil seal body 14, the ring groove 18 can provide an elastic angle for the first seal lip 15, and can also improve the sealing performance, the first seal lip 15 is arranged on the sealing surface of the oil seal body 14 through the ring groove 18, and the second seal lip 16 is arranged at the bottom of the first seal lip 15; the elastic member 17 is arranged on the outer peripheral surface of the second seal lip 16, the elastic member 17 applies force to the first seal lip 15 and the second seal lip 16, and the elastic member 17 can improve the stability of the second seal lip 16; the peripheral surface of the second sealing lip 16 is provided with an accommodating groove 19, the elastic component 17 is arranged in the accommodating groove 19, and the accommodating groove 19 is arranged to ensure that the elastic component 17 is more conveniently and stably installed; the reinforcing ribs 20 are arranged in the oil seal body 14, and the reinforcing ribs 20 can mainly increase the rigidity of the main body of the second oil seal 9, so that the main body of the second oil seal 9 cannot be easily deformed; the first oil seal 8 and the second oil seal 9 that this design was add can improve the holistic leakproofness of speed reducer, the life of extension speed reducer.
The box body 1 is internally provided with a transmission mechanism and a worm 21, the input shaft 4 drives the worm 21 to rotate through the transmission mechanism, the transmission mechanism comprises a first gear 22, a second gear 23 and a worm wheel 24, the output shaft 3 is provided with a first flat key 25, the worm wheel 24 is coaxially connected with the output shaft 3 through the first flat key 25, one side of the output end of the output shaft 3 of the worm wheel 24 is provided with a distance ring 27, the distance ring 27 determines the axial position of the output shaft 3, and the worm wheel 24 and a second deep groove ball shaft 29 are fixed at the same time; the first gear 22 is coaxially connected with the input shaft 4, the worm 21 is provided with a second flat key 26, the second gear 23 is coaxially connected with the worm 21 through the second flat key 26, the first gear 22 is meshed with the second gear 23, the worm wheel 24 is meshed with the worm 21, and the speed reducer is matched with the worm 21 through a transmission mechanism, so that the speed reducer is more stable in a working state.
The first tapered roller bearing 28 and the second tapered roller bearing 29 are installed at two ends of the worm 21, the first tapered roller bearing 28 is located between the second tapered roller bearing 29 and the second gear 23, an end face oil seal 30 is arranged between the second tapered roller bearing 29 and the box body 1, the end face oil seal 30 is located on the end face of the worm 21 and is installed on the box body 1, and the end face oil seal 30 is mainly used for sealing the worm 21.
The working mode is as follows: the first oil seal 8 and the second oil seal 9 are respectively arranged at two ends of the first deep groove ball bearing 6 and the second deep groove ball bearing 7, an end face oil seal 30 is arranged between the second tapered roller bearing 29 and the box body 1, and the end face oil seal 30 is positioned on the end face of the worm 21 and is arranged on the box body 1; the input shaft 4 drives the second gear 23 through the first gear 22, the second gear 23 is coaxially connected with the worm 21, the worm wheel 24 is coaxially connected with the output shaft 3, and the worm 21 drives the worm wheel 24, so that the output shaft 3 works.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concept is not limited to this embodiment, and any modification that utilizes the inventive concept is intended to be within the scope of the present patent application.
Claims (7)
1. The utility model provides a seal structure of speed reducer, is including box (1), motor, output shaft (3) and input shaft (4), case lid (5) are installed at box (1) top, box (1) and case lid (5) between be equipped with sealed pad (2), its characterized in that: a first deep groove ball bearing (6) and a second deep groove ball bearing (7) are arranged in the box body (1), the second deep groove ball bearing (7) is sleeved on the output shaft (3), the first deep groove ball bearing (6) is installed on the box body (1) and is positioned on the end face of the output shaft (3), and one end of the output shaft (3) extends out of the box body (1); first deep groove ball bearing (6) and second deep groove ball bearing (7) have first oil seal spare (8) and second oil seal spare (9), first oil seal spare (8) and second oil seal spare (9) set up respectively in the both ends of first deep groove ball bearing (6) and second deep groove ball bearing (7), be equipped with between first oil seal spare (8) and first deep groove ball bearing (6) retaining ring for the first hole (10), second oil seal spare (9) and second deep groove ball bearing (7) between be equipped with retaining ring for the second hole (11).
2. A sealing structure of a speed reducer according to claim 1, wherein: the first oil seal part (8) comprises an end face seal ring (12) and an end face seal cover (13), the end face seal ring (12) and the end face seal cover (13) are sequentially arranged at one end of the second deep groove ball bearing (7), and the end face seal cover (13) is arranged on the box body (1); the second oil seal piece (9) is positioned in the box body (1), the second oil seal piece (9) comprises an oil seal piece body (14), the oil seal piece body (14) comprises a first seal lip (15), a second seal lip (16) and an elastic component (17), an annular groove (18) is formed in the side face of the oil seal piece body (14), the first seal lip (15) is arranged on a seal face of the oil seal piece body (14) through the annular groove (18), and the second seal lip (16) is arranged at the bottom of the first seal lip (15); the elastic member (17) is provided on the outer peripheral surface of the second seal lip (16).
3. A sealing structure of a speed reducer according to claim 2, wherein: the outer peripheral surface of the second sealing lip (16) is provided with an accommodating groove (19), and the elastic component (17) is arranged in the accommodating groove (19); and a reinforcing rib (20) is arranged in the oil seal body (14).
4. A sealing structure of a speed reducer according to claim 1, wherein: drive mechanism and worm (21) have in box (1), input shaft (4) drive worm (21) through drive mechanism and rotate, drive mechanism is including first gear (22), second gear (23) and worm wheel, be equipped with first parallel key (25) on output shaft (3), worm wheel (24) through first parallel key (25) and output shaft (3) coaxial coupling, first gear (22) and input shaft (4) coaxial coupling, be equipped with second parallel key (26) on worm (21), second gear (23) through second parallel key (26) and worm (21) coaxial coupling, and first gear (22) and second gear (23) meshing, worm wheel (24) and worm (21) meshing.
5. The sealing structure of a speed reducer according to claim 4, wherein: and a distance ring (27) is arranged on one side of the output end of the output shaft (3) of the worm wheel (24).
6. The sealing structure of a speed reducer according to claim 4, wherein: a first tapered roller bearing (28) and a second tapered roller bearing (29) are mounted at two ends of the worm (21), and the first tapered roller bearing (28) is located between the second tapered roller bearing and the second gear (23).
7. A sealing structure of a speed reducer according to claim 6, wherein: an end face oil seal (30) is arranged between the second tapered roller bearing and the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814467.4U CN210715866U (en) | 2019-10-25 | 2019-10-25 | Sealing structure of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814467.4U CN210715866U (en) | 2019-10-25 | 2019-10-25 | Sealing structure of speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715866U true CN210715866U (en) | 2020-06-09 |
Family
ID=70926682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921814467.4U Active CN210715866U (en) | 2019-10-25 | 2019-10-25 | Sealing structure of speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210715866U (en) |
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2019
- 2019-10-25 CN CN201921814467.4U patent/CN210715866U/en active Active
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